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Obstacle Definition & Meaning - Merriam-Webster
OBSTACLE | English meaning - Cambridge Dictionary
OBSTACLE | definition in the Cambridge English Dictionary
OBSTACLE Definition & Meaning | Dictionary.com
OBSTACLE Synonyms: 78 Similar and Opposite Words - Merriam-Webster
obstacle noun - Definition, pictures, pronunciation and usage …
OBSTACLE definition in American English | Collins English …
Obstacle - Definition, Meaning & Synonyms | Vocabulary.com
obstacle | definition in the Cambridge Learner’s Dictionary
Obstacle - definition of obstacle by The Free Dictionary